Malt Extract Addition Question

[cpsmusic]

Hi Folks,

I'm an AG brewer - so far I've done about 20 batches. Due to time constraints I don't have time to do a full AG batch so I'd like to have a go at an extract plus steep batch using the partial boil volume method described by Palmer. From what I've read, to do this you add half the malt extract to half the boil volume and then add the remaining extract at the end of the boil, and finally top up with water in the fermenter. Just wondering why the full volume of malt extract can't be added at the start of the boil? Would it be too thick?

Cheers,

Chris

 

[warra48]

The reason, as I understand it, is that the SG of your boil would increase significantly, and thus affect the degree of hop extractionand throw your IBU calculations out.
If you were to do a full volume boil, then you could use the same calculations as for a normal AG batch.

 

[mckenry]

That and hop utilisation.

 

[cpsmusic]

Thanks! Makes sense!

Cheers!